When turning hard to the left in a traffic circle I hear a loud thump thump thump, I at first I thought it was a cv joint/axle but all checked out, took it to a dealer and they gave me the radius rod bushing scenario, said I should be good. Well I am not convinced they made the right call, the thumping is getting louder after every outing I go on. All of the radiius rods all have the same amount of play, all the rubber looks good etc.??? Wheels are tight.?? The machine has been treated gently, although it has seen some ruff mountain trails. I'm 79, no death wish.